<?php
include("functions.php");
require_db_auth();

// Create connection
$conn = new mysqli($host, $username, $password, $database);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$year = $_GET['year'] ?? date('Y');
$month = $_GET['month'] ?? date('n');

$datetime = DateTime::createFromFormat('!m', $month);
$monthName = $datetime->format('F');
$filename = $monthName . $year . '.csv';

header('Content-Type: text/csv');
header('Content-Disposition: attachment;filename=' . $filename);

$output = fopen('php://output', 'w');

$escape = '\\'; // Define the escape character

// Fetch data
$sql = "SELECT * FROM submitted WHERE status != 'DELETED' and MONTH(eta) = $month and YEAR(eta) = $year ORDER BY eta ASC;";
$result = $conn->query($sql);

// Output column headers
$fields = $result->fetch_fields();
$headers = [];
foreach ($fields as $field) {
    $headers[] = $field->name;
}
fputcsv($output, $headers, ',', '"', $escape);

// Output rows
while ($row = $result->fetch_assoc()) {
    fputcsv($output, $row, ',', '"', $escape);
}

// Close the database connection
$conn->close();
fclose($output);
?>